[Solved] Bus route questions

I made a bus relation, added all needed roads in relation. I have 2 questions:

  1. Some 2-way roads are added in the route 2 times, one when the bus goes and one when the bus comes back from same road. JOSM has marked red these roads. Is it a problem?
  2. How do I add bus stops in the relation? Should I add the node on the road and divide it, or by the road? What role do I have to apply to the bus stops?
    Thank you!

Edit: I found all answers in the wiki.